DYNAMIC STRUCTURE-FUNCTION IN HE-3-HE-4 MIXTURES

被引：14
|
作者：
BORONAT, J
DALFOVO, F
MAZZANTI, F
POLLS, A
机构：
[1] UNIV TRENT, DIPARTIMENTO FIS, I-38050 TRENT, ITALY
[2] UNIV BARCELONA, DEPT ESTRUCTURA & CONSTITUENTS MAT, E-08028 BARCELONA, SPAIN
来源：
PHYSICAL REVIEW B | 1993年 / 48卷 / 10期
关键词：
D O I：
10.1103/PhysRevB.48.7409
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Relevant features of the dynamic structure function S(q, omega) in He-3-He-4 mixtures at zero temperature are investigated starting from known properties of the ground state. Sum rules are used to fix rigorous constraints to the different contributions to S(q, omega), coming from He-3 and He-4 elementary excitations, as well as to explore the role of the cross term S(3,4 )(q, omega). Both the low-q (phonon-roton He-4 excitations and 1p-1h He-3 excitations) and high-q (deep-inelastic-scattering) ranges are discussed.
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页码：7409 / 7418
页数：10
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